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drm/vc4: plane: Remove dead channels_scaled code

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This code can never do anything, as channels_scaled can only be 0 or 2.
I suspect that the index was intended to be i rather than channel, but that
would trigger for scaled RGB planes, and halving lines is not wanted there.

Just remove it.

Signed-off-by: Dom Cobley <popcornmix@gmail.com>
This commit is contained in:
Dom Cobley
2025-12-03 17:56:40 +00:00
committed by Phil Elwell
parent e8017d9f2d
commit d04e379ac5
1 changed files with 0 additions and 10 deletions
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10
drivers/gpu/drm/vc4/vc4_plane.c
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@@ -812,11 +812,8 @@ static unsigned int vc4_lbm_channel_size(const struct drm_plane_state *state,
unsigned int channel)
{
const struct drm_format_info *info = state->fb->format;
const struct vc4_plane_state *vc4_state = to_vc4_plane_state(state);
unsigned int channels_scaled = 0;
unsigned int components, words, wpc;
unsigned int width, lines;
unsigned int i;
/* LBM is meant to use the smaller of source or dest width, but there
* is a issue with UV scaling that the size required for the second
@@ -843,13 +840,6 @@ static unsigned int vc4_lbm_channel_size(const struct drm_plane_state *state,
lines = DIV_ROUND_UP(words, 128 / info->hsub);
for (i = 0; i < 2; i++)
if (vc4_state->y_scaling[channel] != VC4_SCALING_NONE)
channels_scaled++;
if (channels_scaled == 1)
lines = lines / 2;
return lines;
}